Mechanical Performance and Tribological Behavior of WC-ZrO<sub>2</sub> Composites with Different Content of Graphene Oxide Fabricated by Spark Plasma Sintering
This paper presents research on the effects of the addition of various contents of graphene oxide and sintering temperature on the mechanical, tribological, and electrical characteristics of WC-ZrO<sub>2</sub> composites. Wet processing and spark plasma sintering provided dense samples w...
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2024-12-01
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author | Anton Smirnov Yuri Pristinskiy Nestor Washington Solis Pinargote Yaroslav Meleshkin Pavel Podrabinnik Marina Volosova Sergey Grigoriev |
author_facet | Anton Smirnov Yuri Pristinskiy Nestor Washington Solis Pinargote Yaroslav Meleshkin Pavel Podrabinnik Marina Volosova Sergey Grigoriev |
author_sort | Anton Smirnov |
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description | This paper presents research on the effects of the addition of various contents of graphene oxide and sintering temperature on the mechanical, tribological, and electrical characteristics of WC-ZrO<sub>2</sub> composites. Wet processing and spark plasma sintering provided dense samples with simultaneous reduction of graphene oxide (rGO) during sintering. The obtained results showed that the best mechanical properties were observed at a sintering temperature of 1700 °C in samples with 0.5 vol.% rGO content; namely, indentation fracture toughness (5.8 ± 0.4 MPa·m<sup>1/2</sup>) and flexural strength (872 ± 43 MPa) increased by 9% and 24.3% compared with the sample without rGO. In addition to improved mechanical performance, rGO-reinforced composites exhibited lower wear rates and friction coefficients than non-rGO composites, due to the formation of a graphitic lubricating tribolayer on worn surfaces and counterbodies in a friction pair, which provided sufficient lubrication to reduce the coefficient of friction and wear rate. The resulting composites also showed low electrical resistivity, suggesting the possibility of using electrical discharge machining to manufacture ceramic products of complex shapes from them. |
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institution | Kabale University |
issn | 2413-4155 |
language | English |
publishDate | 2024-12-01 |
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spelling | doaj-art-d7c25e832a7040a0bdf7d0fe9499d5562024-12-27T14:52:09ZengMDPI AGSci2413-41552024-12-01648210.3390/sci6040082Mechanical Performance and Tribological Behavior of WC-ZrO<sub>2</sub> Composites with Different Content of Graphene Oxide Fabricated by Spark Plasma SinteringAnton Smirnov0Yuri Pristinskiy1Nestor Washington Solis Pinargote2Yaroslav Meleshkin3Pavel Podrabinnik4Marina Volosova5Sergey Grigoriev6Spark Plasma Sintering Research Laboratory, Department of High-Efficiency Machining Technologies, Moscow State University of Technology “STANKIN”, Vadkovsky per. 1, Moscow 127055, RussiaSpark Plasma Sintering Research Laboratory, Department of High-Efficiency Machining Technologies, Moscow State University of Technology “STANKIN”, Vadkovsky per. 1, Moscow 127055, RussiaSpark Plasma Sintering Research Laboratory, Department of High-Efficiency Machining Technologies, Moscow State University of Technology “STANKIN”, Vadkovsky per. 1, Moscow 127055, RussiaSpark Plasma Sintering Research Laboratory, Department of High-Efficiency Machining Technologies, Moscow State University of Technology “STANKIN”, Vadkovsky per. 1, Moscow 127055, RussiaSpark Plasma Sintering Research Laboratory, Department of High-Efficiency Machining Technologies, Moscow State University of Technology “STANKIN”, Vadkovsky per. 1, Moscow 127055, RussiaSpark Plasma Sintering Research Laboratory, Department of High-Efficiency Machining Technologies, Moscow State University of Technology “STANKIN”, Vadkovsky per. 1, Moscow 127055, RussiaSpark Plasma Sintering Research Laboratory, Department of High-Efficiency Machining Technologies, Moscow State University of Technology “STANKIN”, Vadkovsky per. 1, Moscow 127055, RussiaThis paper presents research on the effects of the addition of various contents of graphene oxide and sintering temperature on the mechanical, tribological, and electrical characteristics of WC-ZrO<sub>2</sub> composites. Wet processing and spark plasma sintering provided dense samples with simultaneous reduction of graphene oxide (rGO) during sintering. The obtained results showed that the best mechanical properties were observed at a sintering temperature of 1700 °C in samples with 0.5 vol.% rGO content; namely, indentation fracture toughness (5.8 ± 0.4 MPa·m<sup>1/2</sup>) and flexural strength (872 ± 43 MPa) increased by 9% and 24.3% compared with the sample without rGO. In addition to improved mechanical performance, rGO-reinforced composites exhibited lower wear rates and friction coefficients than non-rGO composites, due to the formation of a graphitic lubricating tribolayer on worn surfaces and counterbodies in a friction pair, which provided sufficient lubrication to reduce the coefficient of friction and wear rate. The resulting composites also showed low electrical resistivity, suggesting the possibility of using electrical discharge machining to manufacture ceramic products of complex shapes from them.https://www.mdpi.com/2413-4155/6/4/82tungsten carbidegraphene oxidezirconiamechanical propertiesfriction coefficientwear resistance |
spellingShingle | Anton Smirnov Yuri Pristinskiy Nestor Washington Solis Pinargote Yaroslav Meleshkin Pavel Podrabinnik Marina Volosova Sergey Grigoriev Mechanical Performance and Tribological Behavior of WC-ZrO<sub>2</sub> Composites with Different Content of Graphene Oxide Fabricated by Spark Plasma Sintering Sci tungsten carbide graphene oxide zirconia mechanical properties friction coefficient wear resistance |
title | Mechanical Performance and Tribological Behavior of WC-ZrO<sub>2</sub> Composites with Different Content of Graphene Oxide Fabricated by Spark Plasma Sintering |
title_full | Mechanical Performance and Tribological Behavior of WC-ZrO<sub>2</sub> Composites with Different Content of Graphene Oxide Fabricated by Spark Plasma Sintering |
title_fullStr | Mechanical Performance and Tribological Behavior of WC-ZrO<sub>2</sub> Composites with Different Content of Graphene Oxide Fabricated by Spark Plasma Sintering |
title_full_unstemmed | Mechanical Performance and Tribological Behavior of WC-ZrO<sub>2</sub> Composites with Different Content of Graphene Oxide Fabricated by Spark Plasma Sintering |
title_short | Mechanical Performance and Tribological Behavior of WC-ZrO<sub>2</sub> Composites with Different Content of Graphene Oxide Fabricated by Spark Plasma Sintering |
title_sort | mechanical performance and tribological behavior of wc zro sub 2 sub composites with different content of graphene oxide fabricated by spark plasma sintering |
topic | tungsten carbide graphene oxide zirconia mechanical properties friction coefficient wear resistance |
url | https://www.mdpi.com/2413-4155/6/4/82 |
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